'A NEW LEAF IN TIME' is "a rambling and personal work and is subtitled "A book about photosynthesis and how green creatures have shaped the world. For readers between nine and one hundred and nine". It is filled with lots of active links to websites and sound bytes. It has been illustrated by David Walker's family, it has references to their holiday home in Northumberland and the children's tree-house. 'The Prof' and his grandchildren are the characters in the story. It covers everything scientific that a retired professor might wish to communicate to his young grandchildren, complete with humour (which 10 year olds will understand but will certainly make adults smile) .

David Walker FRS, is Emeritus Professor of Photosynthesis at the University of Sheffield. He is a pioneer of the field of photosynthesis, and his many papers and books have made a major contribution to present knowledge of plant biochemistry and physiology. He has contributed to technical training courses for scientists in many Third World countries. He is a Fellow of the Royal Society and a Corresponding Member of the American Society of Plant Physiologists. In 1990 he was awarded the Humboldt Prize. In 1994 he was made a member of the Academia Europea and,in 2004, received the prestigious Communications Award of The International Society of Photosynthesis Research

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